pypdf: pypdf is a free and open-source pure-python PDF library
CVE-2026-84311 is fixed in pypdf on 1 platform by DEBIAN-CVE-2026-84311 (version 6.19.0-1), released September 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.
pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_page.py PageObject._extract_text and PageObject.extract_xform_text to traverse a directed acyclic graph of reused form XObjects in which each form invokes a child multiple times, creating exponentially many traversal paths and causing long runtimes and large memory consumption. This issue is fixed in version 6.16.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pypdf · Debian 14 | 6.19.0-1 | DEBIAN-CVE-2026-84311 | Sep 1, 2026 |
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